<?php 

$insert = "INSERT INTO `#__colunista` (`id`, `cat_id`, `img`, `nome`) VALUES
(1, 4, 'templates/template-econometrix/imgs/skin/foto_pedro_vianna.jpg', 'Pedro Vianna'),
(2, 5, 'templates/template-econometrix/imgs/skin/andre-vianna.jpg', 'André Vianna'),
(3, 73, 'templates/template-econometrix/imgs/skin/pedro_sisnando.jpg', 'Pedro Sisnando'),
(4, 95, 'templates/template-econometrix/imgs/skin/jose_nicacio.jpg', 'José Nicacio');";

$db = JFactory::getDBO();

$query = $insert;

$db->setQuery( $query );
$db->query();
?>